diff --git a/rails/Gemfile.lock b/rails/Gemfile.lock
index 6ce9722..4cf1287 100644
--- a/rails/Gemfile.lock
+++ b/rails/Gemfile.lock
@@ -54,8 +54,8 @@ GEM
       activesupport (>= 4.0)
       awesome_nested_set (>= 3.0)
     acts_as_votable (0.11.1)
-    addressable (2.5.2)
-      public_suffix (>= 2.0.2, < 4.0)
+    addressable (2.8.0)
+      public_suffix (>= 2.0.2, < 5.0)
     arel (8.0.0)
     awesome_nested_set (3.1.4)
       activerecord (>= 4.0.0, < 5.3)
@@ -163,7 +163,7 @@ GEM
     pg (1.0.0)
     polyamorous (1.3.3)
       activerecord (>= 3.0)
-    public_suffix (3.0.2)
+    public_suffix (4.0.6)
     puma (3.11.3)
     rack (2.0.5)
     rack-pjax (1.0.0)